凸透镜成像问题是初中物理中的难点,也是光学知识的重点,更是各地每年中考的热点.特别是涉及物距u发生变化时,导致像的性质发生变化的问题,更是令同学们感到头疼.对于这类问题如果能够熟练地凸透镜成像的成像规律,并把这些规律编成容易记忆的口诀,然后灵活地利用口诀解题,就会显得非常简捷、快速.下面举例说明,希望对提高同学们的解题技巧能够有所帮助. Convex lens imaging is a difficult problem in junior high school physics, but also the focus of optical knowledge, but also a hot spot around the year in the examination .Especially when the object distance u changes, resulting in the nature of the image changes, but also make students feel a headache For such problems if you can proficiently convex lens imaging imaging rules, and these rules into easy to remember formulas, and then use the formula to solve the problem flexibly, it will be very simple and fast.Examples below, hoping to improve students Their problem solving skills can help.